Collinder catalogue
In astronomy, the Collinder catalogue is a catalogue of 471 open clusters by Swedish astronomer Per Collinder. It was published in 1931 as an appendix to Collinder's paper On structural properties of open galactic clusters and their spatial distribution.[1] Catalogue objects are denoted by Collinder, e.g. "Collinder 399". Dated prefixes include as Col + catalogue number, or Cr + catalogue number, e.g. "Cr 399".[2]
 Collinder 399, a prominent asterism in the constellation Vulpecula. | |
| Survey type | astronomical catalog  |
|---|---|
| Named after | Per Collinder |
| Published | 1931 |
 Related media on Wikimedia Commons | |
Vital statistics
- The catalogue contains 471 objects: 452 open clusters, 11 globular clusters, 6 asterisms, 1 stellar moving group, and 1 stellar association.
- Objects are spread out across the entire celestial sphere.
- Cr 8 is the northernmost Collinder object, located at a declination of +85º in the constellation Camelopardalis.
- Cr 411 is the southernmost Collinder object, located at a declination of -79º in the constellation Octans.
Collinder objects which are also Messier objects
The Collinder Catalogue contains 29 objects which are part of the Messier catalogue:
- Messier 6 (Butterfly Cluster)
- Messier 7 (Ptolemy's Cluster)
- Messier 11 (Wild Duck Cluster)
- Messier 16 (Open cluster within the Eagle Nebula)
- Messier 18
- Messier 21
- Messier 23
- Messier 25
- Messier 26
- Messier 29
- Messier 34
- Messier 35
- Messier 36
- Messier 37
- Messier 38
- Messier 39
- Messier 41
- Messier 44 (Beehive Cluster)
- Messier 45 (Pleiades)
- Messier 46
- Messier 47
- Messier 48
- Messier 50
- Messier 52
- Messier 67
- Messier 71
- Messier 73
- Messier 93
- Messier 103
Collinder objects which are also Caldwell objects
The Collinder catalogue pre-dates the Caldwell catalogue by 64 years. The Collinder catalogue contains 28 objects which are members of the Caldwell catalogue:
- C1 NGC 188
- C8 NGC 559
- C10 NGC 663
- C13 NGC 457 (Owl or E.T. Cluster)
- C14 NGC 869 & NGC 884 (Double Cluster)
- C16 NGC 7243
- C19 IC 5146 (Cocoon Nebula)
- C28 NGC 752
- C41 (Hyades)
- C50 NGC 2244
- C54 NGC 2506
- C58 NGC 2360 (Caroline's Cluster)
- C64 NGC 2362 (Tau Canis Majoris Cluster)
- C71 NGC 2477
- C75 NGC 6124
- C76 NGC 6231
- C81 NGC 6352
- C82 NGC 6193
- C85 IC 2391 (Omicron Velorum Cluster)
- C88 NGC 5823
- C89 NGC 6087 (S Normae Cluster)
- C91 NGC 3532 (Wishing Well Cluster)
- C94 NGC 4755 (Jewel Box)
- C95 NGC 6025
- C96 NGC 2516 (Southern Beehive Cluster)
- C97 NGC 3766 (Pearl Cluster)
- C98 NGC 4609
- C102 IC 2602 (Theta Carinae Cluster)
Number of Collinder objects in each constellation
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Collinder objects
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Notes
- Includes only the southern portion of Trumpler 16.
- Superposed on Trumpler 24.
- Imbedded within Messier 24.
- Associated with Messier 17.
- Associated with NGC 6820.
- Imbedded within the Iris Nebula.
- Associated with IC 5146.
Errors
There are some errors in Collinder's list or references to it. For example:[6][7]
- Cr 21, 27, 57, 396, 399, and 426 are asterisms.
- Cr 32, 33, and 34 all refer to parts of the much larger IC 1848.
- There is "some doubt" as to whether or not Cr 84, 182, 221, 254, 265, 269, 283, 294, 336, 387, 404, 425, 456, and 458 are open clusters.
- The positions of Cr 109 and 185 are inaccurate.
- Cr 202 is actually the central condensation of the much larger Cr 199.
- Cr 220 was believed by Collinder to be NGC 3247 when in reality he discovered a "new" open cluster.
- Cr 234 was applied to the southern section of the much larger Cr 233.
- Cr 240 is actually the central condensation of the much larger Cr 239.
- Cr 267, 328, 330, 346, 364, 366, 368, 381, 395, 409, and 414 are globular clusters.
- Cr 334 and 335 are duplicate listings of the same object.
- The original alias given for Cr 339 is the galaxy NGC 6393. The correct alias for Cr 339 is the open cluster NGC 6396.
- The original alias given for Cr 371 is of the nebula which surrounds an open cluster he discovered. He apparently did not know he was first to make the distinction.
- Cr 374 is imbedded within the much larger Messier 24.
- Collinder erroneously believed Messier 11 was a globular cluster.
- Collinder’s description of Messier 73 is actually for Messier 72, a globular cluster, and not the object he intended for Cr. 426.
See also
- List of astronomical catalogues
- Melotte catalogue - a similar catalogue of star clusters published by Philibert Jacques Melotte in 1915.
- Trumpler catalogue - a similar catalogue of open star clusters published by Robert Julius Trumpler in 1930, one year before Per Collinder.
External links
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Wikimedia Commons has media related to Collinder catalogue. |
References
- Collinder, Per (1931). "On Structural Properties of Open Galactic Clusters and their Spatial Distribution. Catalog of Open Galactic Clusters". Annals of the Observatory of Lund. 2: B1–B46. Bibcode:1931AnLun...2....1C.
- "Dictionary of Nomenclature of Celestial Objects". Simbad. Centre de Données astronomiques de Strasbourg. 1 December 2014. Retrieved 18 December 2014.
Avoid the usage of Cr, prefer Collinder
- "Cl Collinder 240". sim-id. Retrieved 2020-06-10.
- "NGC 6540". Retrieved 15 January 2016.
- "Cl Collinder 463". sim-id. Retrieved 2020-06-10.
- Archinal, B. A., and S. J. Hynes. 2003. Star Clusters, Richmond, VA: Willmann-Bell
- "The Collinder Catalog (updated) - Articles". Cloudy Nights. Retrieved 2020-05-29.
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